Home / 19,880.79-29,802.64-6,724.01

Finding the Fourth Proportional to 19,880.79, 29,802.64 and 6,724.01

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Solution

The fourth proportional to 19,880.79, 29,802.64 and 6,724.01 is: 10,079.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.79 : 29,802.64 = 6,724.01 : x
  2. Step 2: Convert to fraction form
    19,880.79/29,802.64 = 6,724.01/x
  3. Step 3: Cross multiply
    19,880.79x = 29,802.64 × 6,724.01
  4. Step 4: Simplify right side
    19,880.79x = 200,393,249.39
  5. Step 5: Solve for x
    x = 200,393,249.39/19,880.79
  6. Step 6: Final answer
    x = 10,079.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.